Trowel



FIG. 1 is a perspective view of a trowel according to the present design;

FIG. 2 is a top plan view thereof; and,

FIG. 3 is a bottom plan view thereof.

The broken line showing of the handle assembly is included for the purpose of illustrating environmental structure and forms no part of the claimed design. 

The ornamental design for a trowel, as shown and described. 